Looks like a proxy war between Saudi and Iran. The kidnappers demand the release of https://en.wikipedia.org/wiki/Sheikh_Nimr sentenced to death in Saudi. Nasrallah is going to be involved as negotiator.
http://al-akhbar.com/node/248885
https://en.wikipedia.org/wiki/Ali_Mohammed_Baqir_al-Nimr is not mentioned yet, but if he is pardoned soon it is an indication that Saudi want to defuse the situation and negotiate. But, this is “honor country” so expect irrationalities.